Framework for metallic vessels



p 1941" E. J. BENTHEM 2,254,561

FRAMEWORK FOR METALLIC VESSELS Filed Oct. 21, 1938 2 Sheets-Sheet 1 MWZM.

Sept. 2,1941; E, J. BENTHEM 2,254,561

FRAMEWORK FOR METALLIC VESSEL-S Filed Oct. 21, 1938' 2 Sheets-Sheet 2 Patented Sept. 2, 1941 UNETED stares PATENT caries 2,254,561 FRAMEWORK FOR METALLIC VESSELS Emond Jozua Benthem, Rotterdam, Netherlands Application October 21,

In the Netherlands October 23,

2 Claims.

The invention relates to the construction of vessels, built according to the combined longitudinal and transverse system.

As is well known the transverse strengthening in the type of vessel under consideration is obtained by a comparatively small number of transverse structures at least some of which are bulk heads, or other complete transverse frame formed by web-frames and transverse beams, and this is supplemented by transverse side frames intermediate the main transverse strucures.

In the vessels built hitherto according to this system the lower ends of the transverse frames were connected by knees, lugs, welding or similar constructions to the margin plate of a double bottom or to a reinforced longitudinal frame of the bottom construction.

These connections of the transverse side frames, especially in tank-vessels intended for the transport of heavy oils and the like, prevent the easy running of the liquid to the well of the pump, and

1938, Serial No. 236,341

furthermore the fitting of heating coils is difficult unless they are fitted in a manner which does not ensure the best effect possible.

It is a primary object of this invention to obviate the difficulties heretofore encountered by cutting off the intermediate transverse side frames at a distance from the outermost longitudinal bottom frames, no direct connection being made between said out ends of the transverse side frames and said outermost longitudinals. Another object of the invention is to provide longitudinal stringers for supporting the cut-off transverse frames.

In cutting off the intermediate transverse frames at a distance of the longitudinals and without connection to these, drainholes are left at the side of the outermost longitudinals in the bottom and through the gutter formed in this way the liquid can easily run to the well and heating coils can be fitted in this gutter, ensuring the best effect possible. 7

The stringers supporting the intermediate transverse side frames are constructed at the inner side of these frames and thus the spaces between the frames are left free and the liquid can run along the hull.

The heating coils can thus be fitted near the hull so that no column of oil is left on the hull.

Generally the stringers supporting the lower ends of the transverse side frames are fitted in the bilges, forming with the bent'bilge-strake a strong support.

The transverse web frames are constructed these parts.

frames are transverse side frames 1, also secured with large knees in the bilges and form a solid support for the stringers.

Generally those knees are of such dimensions that, without substantially weakening them structural parts can be carried through them, connecting the sections of a stringer fore and aft the knee, forming in this way a longitudinal reinforcement. In the sides of the vessel the continuity generally is formed by construction parts fitted inside the transverse web frame.

The invention will now be described with reference to the accompanying drawings.

Figure 1 shows half the midship section of a vessel, constructed according to the invention.

Figure 2 shows, on a larger scale, a section over the bilge of such a vessel.

Figure 3 shows a view of the lower stringer according to section along the lines 3-3 of Figure 2 and looking in the direction of the arrows, and

Figure 4 is a longitudinal sectional view taken along lines 4-4 of Figure 1 and looking in the direction of the arrows.

The main transverse frames 3 consist of deckcross beams 30,, web frames 30 and bottom crossbeams 3b and knees 3d at the bilges connecting Intermediate these main transverse to the hull. These intermediate side frames do not as in prior constructions extend to the outermost longitudinal of the bottom but are cut off at a distance therefrom. To strengthen and support these cut-01f side frames, stringers 4 extend longitudinally inside the intermediate transverse side frames and are secured thereto, and to the main transverse frames and not to the hull, thus leaving a free passage between said intermediate side frames. The knees 3d. are sufficiently massive to permit of apertures 1 being made therein for the passage of construction parts 5 for connecting sections of the stringers 4, fore and aft the transverse frame 3. Straps 8 are shown connecting the stringers 4 with the knee 3d. 9 denotes the hull of the vessel and it are lugs connecting the intermediate side frame I and the longitudinal bottom frame 2 to the transverse beam 322-. The space left between the outermost longitudinal beam and the lower ends of the intermediate side frames is shown at 6. It is to be noted that the bottom cross beams 31) run over the bottom longitudinals 2 and hence do not intersect the spaces between said longitudinals.

Numeral ll, Fig. 4, illustrates a transverse bulk head, and I2 are connecting parts to assure the continuity of the longitudinals 2a and 2b. The deck plating is shown at I3 on Fig. 4.

What I claim is:

1. In a vessel construction, a hull, upper and lower longitudinal beams, main transverse frames comprising transverse bottom beams running over the inside of the longitudinal lower beams, vertical web frames secured to the hull and knees connecting said transverse lower beams and said vertical web frames, said knees being secured to the hull and having apertures for the passage of construction parts therethrough, transverse side frames intermediate the vertical web frames and cut oil" at a distance from the longitudinal lower beam nearest the side of the ship, longitudinal stringers running over the inside of said intermediate transverse side frames and connected thereto and through the main transverse frames and connected thereto, leaving the spaces between succeeding transverse frames and between succeeding longitudinal stringers clear, the intermediate transverse side frames and the upper and lower side beams being also directly connected to the hull of the vessel.

2. The construction as claimed in'claim 1 in which bars passing through the transverse web frames connect the longitudinal stringers fore and aft said frames and thus form with the stringers a continuous longitudinal reinforcement.

EMOND JOZUA BENTHEM. 

